Untersuchungen in der 1,3-Thiazol-Reihe; II<sup>1</sup>. Stabile<i>N</i>-Acyl- und<i>N</i>-Alkoxycarbonyl-aminium-salze
作者:G. ENTENMANN
DOI:10.1055/s-1975-23758
日期:——
Untersuchungen in der thiazolreihe—IV
作者:G. Entenmann
DOI:10.1016/0040-4020(75)80160-8
日期:1975.1
2-Amino-4-methylthiazol-3-oxide 5 is reacted with isocyanates and with acid chlorides. Aliphatic isocyanates attack the 5-position aromatic isocyanates, however, attack the N-oxide-oxygen of the heterocyclic ring. Acid chlorides react with 5 giving reactive N-acylammonium salts which can be isomerisized by bases. As with isocyanates differences of the individual acid chlorides can be observed: with